26
300 min
CONTINUOUS FALL
DISCHARGE PIPE
TO TUNDISH - 15mm
FIXED GRATING
TUNDISH
500 m
ax
DISCHARGE PIPE
D2
METAL
FROM TUNDISH
TRAPPED GULLY
Thermecon
6-2.12 Hot Water TPR Discharge Tundish
One Tundish is supplied with the Boiler, this should be fitted to the hot water TPR valve
discharge pipe at the right hand side of the Boiler.
The Tundish installation should have discharges visible at both the Tundish and the final
point of discharge, however, if this is not possible there should be clear visibility of at
least one.
WARNING
Scalding water and steam can be blown out of the discharge pipe.
Position the discharge so that it is not a hazard to property or people
(especially children).
INST
INST
INST
INST
INSTALLA
ALLA
ALLA
ALLA
ALLATION - COMBISTREAM & COMBI 65 6
TION - COMBISTREAM & COMBI 65 6
TION - COMBISTREAM & COMBI 65 6
TION - COMBISTREAM & COMBI 65 6
TION - COMBISTREAM & COMBI 65 6
Specification
Outlet Pressure Factory Set ........... 3 Bar
Maximum Inlet Pressure ............. 16 Bar
A typical arrangement for the Tundish discharge is shown in fig. 6-2f. Refer to the
applicable Building Regulation G3 - specific details of Tundish installation.
e
zi
s
t
e
lt
u
o
e
v
l
a
V
o
t
e
p
i
p
e
g
r
a
h
c
s
i
d
f
o
e
zi
s
m
u
m
i
n
i
M
(
h
s
i
d
n
u
T
1
D1
D1
D1
D1
D )
e
p
i
p
e
g
r
a
h
c
s
i
d
f
o
e
zi
s
m
u
m
i
n
i
M
(
h
s
i
d
n
u
T
m
o
rf
2
D2
D2
D2
D2
D )
d
e
w
o
ll
a
e
c
n
a
t
s
is
e
r
m
u
m
ix
a
M
t
h
g
ia
rt
s
f
o
h
t
g
n
e
l
a
s
a
d
e
s
s
e
r
p
x
e
s
d
n
e
b
r
o
s
w
o
b
l
e
o
n
.
e
.i
,
e
p
i
p
w
o
b
l
e
h
c
a
e
y
b
d
e
t
a
e
r
c
e
c
n
a
t
s
is
e
R
d
n
e
b
r
o
½
G
m
m
5
1
m
m
2
2
m
9
o
t
p
u
m
8
.
0
m
m
8
2
m
8
1
o
t
p
u
m
0
.
1
m
m
5
3
m
7
2
o
t
p
u
m
4
.
1
Hydraulic resistance of discharge pipework
Fig. 6-2f Typical Tundish Arrangement
The equivalent hydraulic resistance of discharge pipework needs to be calculated where the length of D2
D2
D2
D2
D2 exceeds 9m (maximum for
one step up in pipe size) including resistance of elbows or bends. The following table can be used:-
6-3.1 Heating Connection
6-3
Combistream and Combi 65 Connections to the Boiler
TO HOT WATER
MIXING VALVE
HOT WATER TPR VALVE
DISCHARGE 15mm
CONNECT TO TUNDISH
COLD SUPPLY FROM
ACCUMULATOR 22mm
HEATING
RETURN 1 Bsp
HEATING
FLOW 1 Bsp
HEATING TPR VALVE
DISCHARGE 15mm
Knockout in panel
Fig. 6-3a Combistream and Combi 65 Connections
66666
RECOMMENDED
COMBI 65 EXTERNAL
CONNECTION
